Technology | June 10, 2007

MR-Compatible Injector System Copes with Electrical Interference

The EmpowerMR injector system employs several features designed to cope with the problem of electrical interference in the magnetic field of the MR scanner.
To minimize this problem, the system employs a hydraulic control system instead of the shielded electrical control components used by most other MR injector systems. It has no shielded iron core motors, piezoelectric motors or electrically active motor control circuitry adjacent to the scanner, which significantly minimizes the prospect of electrical interference with the scanner’ s magnetic field. The device provides for utilization in MR field strengths of up to 7 Tesla.
Not battery operated, EmpowerMR links to its electrical supply by a single pass-through cable that does not require special shielding. As there is no motor in the MR suite, the systemdoes not generate audible noise. EmpowerMR’s hydraulic control also means the system can deliver consistent flow rates, as well as volumetric and pressure performance on demand — features that may help improve productivity in the MR suite.

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